CHROME PLATED BLADE: Protects the tool from corrosion, rust, and resin/residue build-up. Extends tool life dramatically. Absorbed power by the motor is significantly reduced so the tool moves smoothly throughout cutting operation. Tool maintenance is fast and easy. Surface hardness: 380-400 Vickers. BODY FLATNESS & BALANCING Blade body flatness obtained via special straightening processes that guarantee exceptionally reduced tolerances. Balancing performed on all saw blades guarantees maximum stability. TRI-METAL BRAZING Special Silver-Copper-Silver Tri-Metal Brazing allows teeth to handle high stress and impact especially when cutting harder woods and composite material.